Sorbents for clearing the aquatic environment of heavy metals and process for its preparation

摘要

1. A process for producing sorbents heavy metals, comprising impregnating a porous support with an aqueous solution of an iron compound and subsequent addition of alkaline solution or concentrated ammonia, characterized in that the aqueous solution of ferric compounds was stirred by mounting the reaction vessel on an orbital shaker, and as the particulate carrier is selected vermikulitobeton. 2. The method of claim. 1, characterized in that the aqueous solution of iron compounds using ferric chloride solution trivalent FeCl · 6HO a concentration of 70-130 g / UHF screen 230 see 3. The method of claim. 1, characterized in that the mixing vessel is carried out by setting the reaction medium on an orbital shaker where the process is carried out for at least 1 chasa.4. The method of claim. 1, characterized in that vermikulitobeton preliminarily pulverized to a size of 1.5-2.5 mm fractions (ranging from 0.25 to 8 mm) .5. The method of claim. 1, characterized in that the sorbent is obtained washed and dried at a temperature of 120-150 ° C.6. Sorbent heavy metals, comprising a porous carrier and iron oxo-hydroxide, characterized in that the porous carrier is a vermikulitobeton, a sorbent has the following component ratio, wt. %: Iron oxo-hydroxide of 47 to 69; vermikulitobeton from 31 to 53.7. Sorbent according to claim. 6, characterized in that vermikulitobeton used in the following component ratio, wt. %: Vermiculite from 6 to 20; cement, from 24 to 40; Sand of 50 to 70.